Thyrotropin-secreting pituitary adenomas (TSHomas) are rare tumors and represent about 1-2% of all pituitary adenomas (prevalence is about one case per million) and cause secondary or central hyperthyroidism. The number of reported cases of TSH-omas tripled in the last decade. The increased number of reported cases resulted principally from the introduction of ultrasensitive immunometric assay ...

Plasma thyrotropin (TSH) secretion was studied in crossbred (Landrace x Large White) immature and young adult Landrace male pigs. Levels of TSH were low over the first 9 wk post-natally and were maximal at 12 wk of age. Thereafter, hormone levels declined and by 16 wk returned to values similar to those at 7 wk. In addition, a transient increase in TSH was noted at 22 wk. A second experiment in...

The association between TSH and serum lipids in people with no apparent thyroid dysfunction is less understood. We have investigated the association between normal thyroid function, defined as TSH within the reference range and serum lipids concentrations. Cross-sectional, population based study with 1785 individuals without known thyroid dysfunction. We calculated mean concentrations of total ...

RATIONALE Ectopic thyrotropin (TSH)-secreting pituitary adenomas are exceedingly rare. To date, there are only 6 cases reported. Here, we describe an even rarer ectopic TSH-secreting pituitary adenoma (TSH-oma) concomitant with papillary thyroid carcinoma. PATIENT CONCERNS A 27-year-old female was admitted to the hospital in 2002 for neck enlargement and palpitation. Thyroid function test sho...

Objective: It was to investigate the relationship between high thyrotropin, thyroid stimulating hormone (TSH) degree and changes of low-density lipoprotein cholesterol (LDL-C) in Yunnan Plateau pregnant patients’ serum China; Methods: All woman were collected from Kunming Angel Women's Children's Hospital January 2021 October 2022, who diagnosed by endocrinology department, during their pregnan...

Serum TSH measurement is the most sensitive screening test for thyroid dysfunction and for the diagnosis of subtle forms of hyperand hypothyroidism (1). Serum TSH has a loglinear relationship with circulating thyroid hormone levels; thus a small change in peripheral thyroid hormone concentrations, even within the normal laboratory reference range, may result in an increase or decrease in serum ...